geometry.resize returns obj for chaining. r=tschaub, (Closes #1931)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@8840 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Geometry/Collection.js

@@ -272,11 +272,15 @@ OpenLayers.Geometry.Collection = OpenLayers.Class(OpenLayers.Geometry, {
      *                 will have four times the area).
      * origin - {<OpenLayers.Geometry.Point>} Point of origin for resizing
      * ratio - {Float} Optional x:y ratio for resizing.  Default ratio is 1.
+     * 
+     * Returns:
+     * {OpenLayers.Geometry} - The current geometry. 
      */
     resize: function(scale, origin, ratio) {
         for(var i=0; i<this.components.length; ++i) {
             this.components[i].resize(scale, origin, ratio);
         }
+        return this;
     },
 
     /**

lib/OpenLayers/Geometry/LinearRing.js

@@ -148,11 +148,15 @@ OpenLayers.Geometry.LinearRing = OpenLayers.Class(
      *                 will have four times the area).
      * origin - {<OpenLayers.Geometry.Point>} Point of origin for resizing
      * ratio - {Float} Optional x:y ratio for resizing.  Default ratio is 1.
+     * 
+     * Returns:
+     * {OpenLayers.Geometry} - The current geometry. 
      */
     resize: function(scale, origin, ratio) {
         for(var i=0, len=this.components.length; i<len - 1; ++i) {
             this.components[i].resize(scale, origin, ratio);
         }
+        return this;
     },
     
     /**

lib/OpenLayers/Geometry/Point.js

@@ -198,12 +198,16 @@ OpenLayers.Geometry.Point = OpenLayers.Class(OpenLayers.Geometry, {
      *                 distance between the point and origin.
      * origin - {<OpenLayers.Geometry.Point>} Point of origin for resizing
      * ratio - {Float} Optional x:y ratio for resizing.  Default ratio is 1.
+     * 
+     * Returns:
+     * {OpenLayers.Geometry} - The current geometry. 
      */
     resize: function(scale, origin, ratio) {
         ratio = (ratio == undefined) ? 1 : ratio;
         this.x = origin.x + (scale * ratio * (this.x - origin.x));
         this.y = origin.y + (scale * (this.y - origin.y));
         this.clearBounds();
+        return this;
     },
     
     /**

tests/Geometry/LineString.html

@@ -107,7 +107,7 @@
     }
 
     function test_LineString_resize(t) {
-        t.plan(7);
+        t.plan(8);
         
         var tolerance = 1e-10;
 
@@ -123,7 +123,8 @@
         var scale = 10 * Math.random();
         
         var oldLength = geometry.getLength();
-        geometry.resize(scale, origin);
+        var ret = geometry.resize(scale, origin);
+        t.ok(ret === geometry, "resize returns geometry");
         var newLength = geometry.getLength();
         t.ok((((newLength / oldLength) - scale) / scale) < tolerance,
              "resize correctly changes the length of a linestring")

tests/Geometry/Point.html

@@ -132,7 +132,7 @@
     }
 
     function test_Point_resize(t) {
-        t.plan(5);
+        t.plan(6);
         
         var tolerance = 1e-10;
         var x = 100 * Math.random();
@@ -147,9 +147,10 @@
         var scale = 10 * Math.random();
         var oldDistance = origin.distanceTo(point);
         
-        point.resize(scale, origin);
+        var ret = point.resize(scale, origin);
         var newDistance = origin.distanceTo(point);
         
+        t.ok(ret === point, "resize returns geometry");
         t.ok((origin.x == i) && (origin.y == j),
              "resize leaves the origin untouched");
         t.ok((((newDistance / oldDistance) - scale) / scale) < tolerance,